M5.5 Carbon With Washer External Hexagonal Self Drilling Screw Bolt

M5.5 Carbon Steel Zincification With Washer External Hexagonal Self Drilling Screw Bolt Tapping Drilling Tail Screw 100 Pcs. Size: M5.5. It is wood drill tail screw, mainly used in steel structure caigang watt fixed, can also be used for fixing the simple construction of the sheet material.Standard hex washer head screw,can be easily installed.